I have searched the existing issues and discussions.
I am using the latest version of Open WebUI.
Installation Method
Docker
Open WebUI Version
v0.6.26
Ollama Version (if applicable)
No response
Operating System
Docker
Browser (if applicable)
No response
Confirmation
I have read and followed all instructions in README.md.
I am using the latest version of both Open WebUI and Ollama.
I have included the browser console logs.
I have included the Docker container logs.
I have provided every relevant configuration, setting, and environment variable used in my setup.
I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
Start with the initial platform/version/OS and dependencies used,
Specify exact install/launch/configure commands,
List URLs visited, user input (incl. example values/emails/passwords if needed),
Describe all options and toggles enabled or changed,
Include any files or environmental changes,
Identify the expected and actual result at each stage,
Ensure any reasonably skilled user can follow and hit the same issue.
Expected Behavior
All available models can still be used when changing global params.
Actual Behavior
Changing global parameters disables certain models like gpt-5 that do not accept the modified arguments
Steps to Reproduce
Set a custom value under Settings → Advanced Parameters i.e. num_ctx to 8192.
Seems an option to exclude certain models from global configs would resolve this.
Changing model settings directly does not resolve this as "Default" loads global config, and setting any custom value results in the same error due to passing the argument at the new value (even if it's the original/built-in default).
Originally created by @98h398hrpohpoai on GitHub (Sep 1, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/17131
### Check Existing Issues
- [x] I have searched the existing issues and discussions.
- [x] I am using the latest version of Open WebUI.
### Installation Method
Docker
### Open WebUI Version
v0.6.26
### Ollama Version (if applicable)
_No response_
### Operating System
Docker
### Browser (if applicable)
_No response_
### Confirmation
- [x] I have read and followed all instructions in `README.md`.
- [x] I am using the latest version of **both** Open WebUI and Ollama.
- [x] I have included the browser console logs.
- [x] I have included the Docker container logs.
- [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.**
- [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
- [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps:
- Start with the initial platform/version/OS and dependencies used,
- Specify exact install/launch/configure commands,
- List URLs visited, user input (incl. example values/emails/passwords if needed),
- Describe all options and toggles enabled or changed,
- Include any files or environmental changes,
- Identify the expected and actual result at each stage,
- Ensure any reasonably skilled user can follow and hit the same issue.
### Expected Behavior
All available models can still be used when changing global params.
### Actual Behavior
Changing global parameters disables certain models like gpt-5 that do not accept the modified arguments
### Steps to Reproduce
Set a custom value under Settings → Advanced Parameters i.e. num_ctx to 8192.
### Logs & Screenshots
gpt-5 responds with:
Unrecognized request argument supplied: num_ctx
### Additional Information
Seems an option to exclude certain models from global configs would resolve this.
Changing model settings directly does not resolve this as "Default" loads global config, and setting any custom value results in the same error due to passing the argument at the new value (even if it's the original/built-in default).
GiteaMirror
added the bug label 2026-05-20 23:26:18 -05:00
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Originally created by @98h398hrpohpoai on GitHub (Sep 1, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/17131
Check Existing Issues
Installation Method
Docker
Open WebUI Version
v0.6.26
Ollama Version (if applicable)
No response
Operating System
Docker
Browser (if applicable)
No response
Confirmation
README.md.Expected Behavior
All available models can still be used when changing global params.
Actual Behavior
Changing global parameters disables certain models like gpt-5 that do not accept the modified arguments
Steps to Reproduce
Set a custom value under Settings → Advanced Parameters i.e. num_ctx to 8192.
Logs & Screenshots
gpt-5 responds with:
Unrecognized request argument supplied: num_ctx
Additional Information
Seems an option to exclude certain models from global configs would resolve this.
Changing model settings directly does not resolve this as "Default" loads global config, and setting any custom value results in the same error due to passing the argument at the new value (even if it's the original/built-in default).
@tjbck commented on GitHub (Sep 1, 2025):
Intended behaviour.